PDF malware analysis — malicious · d935175d61e5b680

MALICIOUS

PDF

7.1 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 1f7f383c2a5eb2fe1aae5a476f4fd2fe SHA-1: 706a64c6dae5f3a1b46b54655c3463fc11c75246 SHA-256: d935175d61e5b6809f842707d9d51a4db9f3337d6dc1feb4965185883e1cad67

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains embedded JavaScript with multiple eval() calls, indicating obfuscated malicious code execution. The ML classifier and ClamAV detection strongly suggest this is an exploit document. The JavaScript stream 'javascript_obj0013_001.js' was extracted, and its presence, along with the eval() calls, points to a likely exploitation attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `e18ad3e79f326b0017d4584f1ce156fa29c7c7018ed42443f347e260e3e717fb`	pdf-javascript-stream	PDF /JS object 13 at offset 0x38E	5725 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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